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  • 1
    Electronic Resource
    Electronic Resource
    Non-constant parameter NC tool path generation on sculptured surfaces (1994)
    Springer
    The international journal of advanced manufacturing technology 9 (1994), S. 281-290 
    Details
    ISSN: 1433-3015
    Keywords: Computer-aided manufacturing (CAM) ; NC milling ; Orthogonal projection ; Sculptured surface modelling ; Tool path generation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract An algorithm for three-axis NC tool path generation on sculptured surfaces is presented. Non-constant parameter tool contact curves are defined on the part by intersecting parallel planes with the part model surface. Four essential elements of this algorithm are introduced: initial chordal approximation, true machining error calculation, direct gouge elimination, and non-constant parameter tool pass interval adjustment. A software implementation of this algorithm produces graphical output depicting the tool path superimposed over the part surface, and it outputs cutter location (CL) data for further post-processing. Several applications examples are presented to demonstrate the capabilities of the algorithm. The results of this technique are compared to those generated from a commercially available computer-aided manufacturing program, and indicate that equivalent accuracy is obtained with many fewer CL points.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01781282
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Host utilization and seasonal occurrence of Dermacentor (2000)
    Springer
    Experimental and applied acarology 24 (2000), S. 631-643 
    Details
    ISSN: 1572-9702
    Keywords: American dog tick ; parasite-host interactions ; Rocky Mountain spotted fever ; winter tick ; hosts ; seasonal activity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A total of 3,235 Dermacentor variabilis (Say) specimens were collected from birds, mammals, and by dragging vegetation, and 2,683 D. albipictus (Packard) ticks were collected from deer from 1993 to 1996. Peak seasonal occurrence of adult D. variabilis was from May through July with a precipitous decrease in August. Nymphal D. variabilis populations peaked in June. Peak activity of larvae was bimodal, with one activity peak during late summer (September) and a second peak in winter or early spring. The raccoon, Procyon lotor (L.), was the principal host of adults followed by the Virginia opossum, Didelphis virginiana Kerr. Rodents and the eastern cottontail rabbit, Sylvilagus floridanus (J. A. Allen), were the primary hosts of nymphs. The marsh rice rat, Oryzomys palustris (Harlan), was the principal host of larvae followed by the pine vole, Microtus pinetorum (Le Conte), and white-footed mouse, Peromyscus leucopus (Rafinesque). All stages of D. albipictus were found only on white-tailed deer, Odocoileus virginianus (Zimmermann). Numbers of adult and nymphal D. albipictus peaked in November, whereas larvae peaked in September.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1026566301325
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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